Pillar — Stress & Cortisol

350 mg

rhodiola — the dose the trials used, not the marketing dose.

Panossian · Phytomedicine 2010

The gap

Stress is not in your head. It is a measurable cortisol shift that costs you sleep, focus, and recovery — silently. Reset the baseline, not just the moment.

The evidence

  1. 30%

    of UK adults report chronic work-related stress

    Mental Health UK · 2023

  2. 29%

    reduction in mental fatigue with standardised SHR-5 rhodiola in 4-week RCT in stress-related fatigue

    Olsson · Planta Med 2009

  3. 30 min

    until L-theanine measurably increases alpha-wave activity

    Kimura · Biol Psychol 2007

What KōJō provides

Three inputs, dosed at the level the research used.

  1. Ingredient 1

    350 mg

    Rhodiola Rosea Extract

    Standardised ≥3% rosavins, ≥1% salidroside. HPA-axis modulation under load — the trial-grade dose, not a teaspoon.

  2. Ingredient 2

    200 mg

    L-Theanine (Suntheanine)

    L-isomer only. Increases alpha-wave activity within 30 minutes. Calm without sedation; pairs with caffeine for focus.

  3. Ingredient 3

    200 mg elemental

    Magnesium Bisglycinate

    Most bioavailable form. Parasympathetic activation; the cofactor for over 300 enzymatic reactions including cortisol regulation.

What to expect

It compounds. Give it the time.

  1. Week 1–2

    The first stress-spike that doesn’t escalate.

    L-theanine + magnesium reach therapeutic levels. The Sunday-night dread softens.

  2. Week 4–6

    A measurably calmer baseline.

    Rhodiola adaptogenic effect compounds. HPA axis recalibrates; cortisol awakening response normalises.

  3. Week 8+

    You respond — you don’t react.

    The shoulders-up-to-your-ears feeling fades. Sleep architecture improves alongside.

Less noise. More proof.

Every dose published. Every ingredient sourced.

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